My father bought this Elky new in 1974. He passed away in 1983 and it sat until 2007 with only being driven once a year to be VET tested. It has 43,000 miles on it. I had a 540 cube Dart Big M with Comp roller cam and Edelbrock alumunum heads and RPM Air Gap intake with a Holly carb and MSD ignition installed, even tho the original 400 sb was quite peppy. JB