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Im pretty sure all mustangs 79-up have linear springs, I know my stock springs are linear as drag racers cut rear springs all the time, and stock springs cut 1 coil seems to be the best bet to run on a stock style rear suspension for drag racing. Cars lookin mean and clean greddy, SRA swap?
No dyno yet, I'll be throwing it on a mobile dyno somewhere in myrtle beach if there is one. I'm assuming right now it's in the 440-450whp area. Then after the newer mods hopefully around the 480 area. I'm sure the stock throttle body, lower pulley, and mail order tune will be what keeps me from hitting the 500 mark.