 Production of the 450SE ended in 1990 after 35 had been built.There was also the 1989 400SX, a supercharged version developed by "Northern TVR Centre" in Barrow-in-Furness.Along with DPR Forced Induction Systems Sprintex supercharger units were fitted, and while power and torque outputs are unknown the smaller engined 350SX showed increases of over thirty percent, which would mean ample power for most.