500 "HotRod"

I am classic 500-collector, and I plan building one into HotRod style.
I want it to sound like a "big" Rod, and consider giving it a V6 engine mounted in "back seat position". (I am not going to drive it for real, just park it in front of the cafe!!)
It will be a quite tight squeeze, so i think i might go for an engine from a front wheel drive V6.

Does anybody have an idea on what engine to choose ?
-VW/Audi is obvious, but I would prefer something 1960/1970s.
What other cars has been made with V6 FWD?

A Harley engine might be fun as well....
Has anybody tried bolting a bike engine onto a car rear end ?

-Or has anybody experience from transplanting engines into 500s?

Oh yes. I know one Ukraine copy of fiat 500 (It iz kalled ZAZ 965) That has two Yamaha`s engines

A Very beautiful version of an small italian car....

http://img187.imageshack.us/img187/3000/fiat500cb05a.th.jpg (http://img187.imageshack.us/i/fiat500cb05a.jpg/)
http://img390.imageshack.us/img390/7721/fiat500cb01.th.jpg (http://img390.imageshack.us/i/fiat500cb01.jpg/)
http://img263.imageshack.us/img263/2807/fiat500cb11.th.jpg (http://img263.imageshack.us/i/fiat500cb11.jpg/)

I have found the video to the web page
www.diecastmodels.it/Video.html (http://www.diecastmodels.it/Video.html)

Oh yes. I know one Ukraine copy of fiat 500 (It iz kalled ZAZ 965) That has two Yamaha`s engines


have uou a picture?