Doug,
Even on the engine dyno you don't get 438bhp out of a T3/4 .

I would say that you would be lucky to get any more than 360bhp with even the Escort Cosworth set up on that c/r.

Would be flat as a fart off boost as well. 7.2 is really 500bhp and T4 c/r. You could actually bolt a T4 on and with a suitable map / and the Escort intercooler / seperation kit and get nigh on 400bhp or maybe more with suitable cams .