moving to the dc area and wanted to know if there is any decent (very good mechanic skills) engine shops in or around the DC area that sells/imports engines and will install them?

No one in the Northeast can compare to Acosta Racing in Wallington, NJ 973-365-1190
I know it is a little far but these guys have cars from all over, Cali, FL etc.......
Have seen many skylines in this shop along with top of the line RX7 and Supras.

I need a wiring harness to put a b16A in a civic dx