[Talladega900]

If I had a vintage, this would get some serious consideration:

MOTUS MOTORCYCLES - The MST V4 Sport Tourer

 

[Talladega900]

Or this:
http://www.weber-motor.com/fileadmin/templates/w-motor/content/produkte/specsheets/V4_NA_01.pdf

 

[zingZACH]

People have built the Ford V4's to around 160hp n/a... I would love to see one of those motors you listed end up in a Sonett or 96 though!

Chris Moberg is running a 14:1 compression ratio revving out to 8500rpm in his Ford V4 Sonett AutoX car.

 

[Talladega900]

^^Yep. Yellow Thunder.