I owned an LPE 415 cubic in 1990 ZR1...Had it built by LPE...Bored and stroked, cars best time was [email protected] was back in 1996...LPE was the ONLY builder at that time running that kind of cubic inches...great motor, still miss John L what a great guy!...Back than I was LT5 John:thumbsup:I have a 94 and it is great, but they are heavier than the early ZR-1's so the extra HP might make up for the weight difference. Having driven both a 375HP and 405HP I couldn't tell the difference. Stock is stock, but a modded Z is a whole different story.