Don't do it...ran my car without them, then ran it with them, then ran with out them again and I was right. No difference in timeslips. Take Green92LX's advice. Most aftermarket cams and heads are designed to run 1.6's anyway. Wait till you make that swap to get rollers. If money is burning a hole in your pocket then get something to help the suspension LCA's or subframes or whatever. Can never go worng with making the chassis stronger. I had near same setup as you but I must be a little lighter or something cause I ran 13.60's with stock motor.
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1988 GT-under construction
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