What do you thank $239 turbo?

That particular one is too small for a 360...

You need (1) of the specification turbocharger that Madart used on his TT 360 67 Dart Build.

I believe it was a GT45....from ebay like this one
http://www.ebay.com/itm/GT45-T4-T66...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

trust me, 600hp is no prob.