Has anyone done the SLP 1 5/8" headers without replacing motor mounts and still fit????????????????

 

I havn't done the 1 5/8 but I have done the 1 3/4 inch SLP headers. Didn't have to change anything. Hell, the mounts are the original ones in the car.

This is not to say you will or won't but you may have to put a small dent in the header to keep it rubbing on steering shaft.

Hope that helps!!

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'91 Z-28 5.7, SLP 1 3/4 headers, 4 inch Mufflex/Flowmaster cat back, gutted cats, Edelbrock intake, 8.5mm Jacob wires, MSD Blaster coil, S&W subframe setup, Jacob Pro Street Ignition, complete Kenwood system.

 

I've installed the 1 5/8 SLP headers on my 92RS and no, I did not have to remove the motor mounts. Follow the link:
https://www.thirdgen.org/messgboard/...ML/002882.html