Simplex Engine Machine Shop in Willow Run, MI

This is the only place for me. I bought my last 2 cars from them and they keep them running. It's a good old-fashioned family business; trustworthy."

These guys completely rebuilt my 351 with no issues!! Hard to find now a days! Reasonable pricing, Highly recommend!"

these guys are the best see will or dan they can get just about anything i have been dealing with them for over 15 years never a problem ever"

I love Jim's and the service provided very wonderful family own business. I will recommend and be returning for future service."

Very valuable Cars, good price and lower then other dealers in the area"

I wanted to thank you for all of your efforts to assist me. There were several other organizations I contacted an you by far were the most professional and responsive. I will…

Exceptional work, my van is back on the road and running better than before!"

ENGINE BUILDERS BEWARE!!!! They lack knowledge! Owner couldnt figure out what was the oil pump on my engine. I had to explan what was and why. I was also screwed over on my…

I never expected to be replacing an engine at this point and time in my life. But this truck has literally saved my life more than once. So I was suffering anxiety issues…