I have a few questions. First off I bought a 5.3 LS motor to stick in my 52 Chevy RatRod. I am going to carburate it and put a MSD box to control the coils, I have shorty headers on the way and am looking at my next move. What I want to do is put in 1.8 rockers cause at this point I will not be porting the heads or doing a cam. My 52 Rat Rod is very light as it has a tube racing frame so a bunch of HP wont be needed. When I got the truck it had a 1973 350 with a 4barrel that put out 155hp from looking up the Block and Heads on it, the LS I have is out of a 1999 gmc sierra and from what I looked up should put out 270HP and 330Torque.Any help with what I need to install the 1.8 rockers would be appreciated.

Thanks, Randy