I am putting an ls in my 55.1. I bought a set of Sanderson ls150. I talked to their rep at the Louisville street rod nationals. I got the 1 1/2 in because my setup is under 400hp. They fit perfectly.. I have the motor in the frame. The only issue I have is that I bought the style that sweeps back and I will have to modify the brake pedal. I will have to offset it 3 in. I am using master cylinder under floor. Bought from ECI brakes. Uses original pedal. I have already got a plan for it and it shouldn't be a problem. If you get the style that dumps straight down you will have a clearance issue on the right side with the starter. I forgot to say that the brake pedal might work as is . You have to push it about 4 1/2 in and then it touches the headers. I have 4 whl discs and it may work fine but it is close. Brakes are finished. I can send pics if you want

Last edited by captnjerry1; 03/22/2015 2:01 AM.
55 first series, ls engine & trans
Under consturction