Hi all I am building a 74 dodge dart into a bit of a drag car. Has a 500ci stroker motor on methanol, powerglide and a 9 inch. Car is mini tubbed with the leafspring inboreded and 35 splines axles and 325 tyres. I am looking at getting a tailshaft made, will the car require a one or two piece tail shaft? Drive shaft measurements are Drive shaft: L 151.5cm (from pinon bolt face to seal) Carrier 91.8mm U bolts 42.6mm 27 splines Engine Is probaly going to make 650-700hp and turn at 7500rpm. So what do you guys reckon? Edit: I will add that there are two driveshaft manufacturers in my area, one will only build a two piece saying it a to risky to run a single piece. The other said single piece will be fine.