Mark; Congrats on the 4.0 swap. I am assembling parts to do that myself but will stick with a carb intake. Anyways, I have a set of 69 Jav V8 springs sitting next to a set of American I6 springs. They sure look the same except the Jav springs are about 2" shorter. I test fitted the isolaters from the American and they fit the Jav springs perfectly. I dont know what the will do on the car, but if anyone has some input lets hear it. When I get a week-end to spare I will swap them to check out the fit......Russ __________________________________ Discover Yahoo! Stay in touch with email, IM, photo sharing and more. Check it out! http://discover.yahoo.com/stayintouch.html