I'll have some more info on fittings for the hydraulics here shortly. I just ordered some stuff and so I'll do up some pics of what fits where, where to get what and about what it will cost you.
Essentially what you need is:At the pump
Cap the return nipple and clamp it using a rubber cap, something like for vacuum fittings should work well.
On the pressure out port you need a 16 x 1.5mm o-ring to -6AN fitting (straight). If you buy it steel instead of aluminum it's going to run about $8.71 for the fitting at http://www.sweetperformance.com At the hydroboost
Buy steel fittings (~$24. on ebay) and these will be 18 x 1.5mm o-ring to -6AN fitting (straight) for the pressure in, 16 x 1.5mm o-ring to -6AN fitting (straight) for the pressure out, and a female JIC x male JIC Boss adaptor (in 37*) Hose and Fittings part #6400-04-02 (this will give you the o-ring fitting on the HB side and threads are 5/16-24 at the HB and -6AN at the hose side). If you buy the return adaptor separately at http://www.Hoseandfittings.com
you need to check that the hole in the HB side is the same as the hole in the nipple you took off the HB or you will need to drill it to match (it will be ~$4.80).At the reservoir
If you want to use GM 5/8" return hose to save on fittings then remove the -10AN fitting from your reservoir and install the 1/2"NPT x 5/8" hose nipple listed previously, available at Summit Racing, and run 5/8 hose to the HB using hose clamps. The alternative is to use -10AN fittings and hose available from http://www.pscmotorsports.com
For the return line I'm installing a -6AN Male Flare x 1.4" NPT Male Tee On Run fitting after pulling the '6AN fitting out of my Appleton. This fitting is available at http://www.sweetperformance.com
(might have to call them, but I'll post the part # if I get it on my invoice) for $9.08. If I'm not mistaken they only had it in aluminum. The straight pass through of the Tee fitting ("On Run") is -AN6 at one end for the return from the pressure out on the HB and is 1/4" NPT at the other end I'll screw into the reservoir. The Tee off the 90* is -6AN for the return from the hydroboost. If you buy a reservoir with three ports then great, just use each one accordingly... but I have the Appleton so I'm Tee'ing these two lines.Hose fittings
I will probably be editing this and I'll give you lengths needed later but as far as fittings and hoses I'm planning to buy those from http://www.pscmotorsports.com
I plan to use all reusable fittings and these will be either H53 (45*), H52 (90*), or H51 (straight) and cost about $11.00 each at PSC.
The pump will get a H52 (90*).
The HB will get three H52 (90*).
The reservoir will get one H51 (straight) and one H52 (90*).Hose
There are various places to source hose. Because they are down the road from me I'll use PSC.
H50, (-6AN) 3/8" ID pressure hose = $4./ft.
H25, (-6AN) 3/8" ID low pressure hose (HB return) = $2.30/ft.
H24, (-10AN) 5/8" ID low pressure hose (reservoir return) = $3.50/ft.
Now, you can source some cool looking 5/8" (-10AN) hose if black bores your, I've seen it available in blue. Search for it as push lock hose. Again, Howe Performance sells a variety of hoses as well.