i bought it new it is well capable of 500 + hp it is non lockup i ran it with a ta62 turbo double pumps with 009 inj. on a stock motor car went 11:40's then a part of 1 of the blades on the turbo broke so i sent the turbo back & it was replaced but i went to a larger turbo which requires 3800 stall so this one won't be used again as far as miles it has probably less than 300 miles & about 20-30 passes i believe my setup makes over 500 hp as it is. it is a tr limited weighd about 3600lb & i go about 290lb myself. the convertor spooled mt ta62 very well with stock suspension i had a 1.56 60 ft. if you want email me mach173kd@aol.com
500 hp should be no problem. Had it behind a 455 that was rated a little over 500 hp. Had no problems over the roughly 1500 miles I drove it. Went back to a 2200 stall stock D5. Let me know if interested. Also asking $250 + shipping.