1st thing you need to do is remove the lump on the passenger side inner fender to make room for the turbo. I did it on this car even though I'm not putting a turbo on it just in case I do sometime down the road. I only posted this point since you have 2 posts. If you already knew it was an obstruction then disregard.
 

 

 
 

I know the early engine compartment is narrower but after looking at yours I hope I removed enough metal.

Ughhh..., my car has gotten rather dirty. But, I think I have only driven the Turbo Pinto all of three miles in the past year.  Anyway, here is the marginal clearance I have with the IHI wastegate. As you can see the sheet metal has a downward curve. I drilled a hole so flammables can't puddle.

The whole fit is very tight. The steering rack to oil pan, the rear starter bearing to steering rack strap, the upper throttle body to hood and as shown the wastegate to inner fender all have no more that 1/8" clearance.