1st scootingp, all GM cars after , or starting in 75 had single exhaust unless you had in changed back then. But all GM cars starting then were built for a converter & single exhaust was the thing. But please do it right & get yourself a duel exhaust crossmember , any GM A body car from 73-74 will use a duel exhaust crossmember as you could have either so they only came with a duel crossmember. Theres always someone with them for sale here or on the A-body site . Also there always for sale on ebay. Next this question is for 77sjgp. Where did you get your 2" drop spindles for your GP ?? They would be the same for my 73 GTO & I want to so bad lower the front end because it sits so high I can see inside the engine compartment. I have new springs form Pontiac that i thought by now they would have sagged a little bit but no there still at the correct driving height that Pontiac says they should be at, but I don't want it that high. Place, part number, price?? Please . ???
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