Need forged dished type pistons for lt1?

Im planing on supercharging a lt1 engine going with a little higher boost than 7 psi, around 12/15 psi. I want to buy buy dished type pistons to lower compresion ratio up to 9.00:1 to prevent detonation. But i cant seem to find around, a specific brand or number for the lt1 engine with stock heads, crankshaft and rods. Please help on this im kinda rookie on this. the brand and part number would be apreciated or piston dimensions will work also..
thanks

We carry a full line of products from JE, Wiesco, SRP, Ross, and Diamond. I will send you a PM with some information.

The standard 1st gen s.b. Chevy and the LT-1 use the same internal rotating assembly parts.

Try going to: http://www.jepistons.com/cat/je/auto/chevy_sb/extreme_duty_23_inv.shtml

This will list a variety of forced induction pistons. Most likely, you will find something that meets your needs.

Sealed Power Powerforged Speed Pro L2441F30 or L2441F. These are the D shaped that Lingenfelter mentions in his book.:)

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_26084_-1

je pistons makes a real good piston. we are runing 22psi on a set with no failures. ps you need to give a little more info on you motor. ie is it stock.

Eric at Victory set me up with my set for my turbo motor.
http://www.taekwondoplus.org/z28/Turbo/NewTurbopistons.htm

Great customer service, great follow thru and pricing.