You should talk to Steve Wynne at DMC in Houston as he has hot-rodded the engine to 197 hp without undue stresses and reliability concerns...just good old hot rodding techniques. 6894 is getting picked up in a week or two to be totally redone and get lowered and the hp bump. I'll have it back by December so I'll let y'all know! She currently has 9,400 miles on her and I have had her since new. I'd steer clear of the turbos and superchargers as this engine was not designed for those stresses. Being an engineer, I've seen lots of failed metal components and I'd prefer one not be my DMC-12. : ) New England Fred 6894