Couple of rebuild question

[redman76]

I've almost got everything done to bolt carb back on car.  Couple of questions:

(1)  The HP kit came with two main to airhorn gaskets.  2165 & 2722.  They look identical to me.  Do I just use either one?

(2) Which power piston do I start with?  My engine specs below.

SPECS:

350ci (approx. 9:1 comp) with TH350 auto 3:08 rear gears

Heads - Brodix IK200 (plan on 383 stroker in the next couple of years) 64cc Chamber, 200cc Intake Runner, 2.02/1.6 valves

Cam - Lunati 60102 (mild performance cam so I don't blow out tired bottom end, will replace on 383 build with high lift roller)
Advertised Duration (Int/Exh): 256/262 Duration @ .050 (Int/Exh): 213/219 Gross Valve Lift (Int/Exh): .454/.468
LSA/ICL: 112/108
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 1000-5500

Intake - Edlebrock RPM Q-Jet

Exhaust - Hooker Sidepipes (1 7/8" Primaries) with STS Spiral Baffles

[Cliff Ruggles]

We supply a thicker main body to airhorn gasket in our kits.  Use the thin one unless the fit between the parts requires the thicker one to seal things up.

I would use the plain colored spring, it may be light blue in some kits....Cliff