Has anyone upgraded to these from the stock 1.5 on the 4.3 vortec? I was reading a while back on another site I cant find now that it was a good addition with the CAI and the Flowmaster.
The part I cant remember is if the stock pushrods can be used or if you need longer ones.

since my engine is at the machine shop...i've gathered the cai, the exhaust and set of stamped steel 1.6's. hope to get my hands on an e-fan b4 engine is ready to go back in.

OH on a side note .... another cheap "free" mod is to remove the restrictor from the bottom of the tb. since I have a spare Im gonna try that one too!