sure,it will help the truck radiator in fron of it,,you know,redneck closed cooling.

What about the AC think I can use that to cool my bevarges??

Is it summer yet

You actually could do that

Sorry about the confusion on the spacer idea , i was curious if any were out there for the ls heads to adapt other manifolds , LIKE the ones big block ford guys use to allow them to use the more extensive variety of bbc manifolds on thier ford heads .
I will look at the pcm and indmar supercharged manifolds next chance i get and see if they have a chance of being adapted to the 4" imco style riser . So far the ones i have seen has been catalyst style

imco ls....

http://imcomarine.com/cal_store/exha...manifolds.html