i am looking for an adapter plate .i am thinking of useing a different intake on my 91 gmc.it is going to have a 383 with a supercharger, so i was thinking that i should try to run a better intake.i also dont want to buy the one that gm makes it is very pricey.if anyone is useing this set up on something like this let me know?
thanks shawn

 

I have one on my 95 with a 383. I think Holley makes it. 4150 carb to TBI.

 

I've got one sitting right here that i used on my camaro, i'll sell it to you if you'd like. Just PM me.