Hey I've had numerous modifications including full exhaust, motor swap, metal work etc. all done at "KustomShop" owned by Brian Zimmer. His work is very thorough and attention to detain is always shown through his work. They can do almost anything, and is currently building several all out dragsters for customers. Also, when I was short on cash his partnership always trusted me and gave me time to pay. Kustom shop's number is 240-388-6514 ask for Brian.