As far as 2.3 swap to 5.0. I think the 2.3 turbo swap is easier. Rearend is reusable,
Trans is reusable. [Of course the A4LD] is not going to last long]All your 2.3 accessories just bolt on. Now a 2.3 NA to turbo. Rebuild the motor [Probably needs it anyway]. New forged pistons. [higher than a regular pistons agreed]. Change the shape of combustion and get rid of heart shape. Redo head. Drill drain in block. [boss on block is there]. Get computer 75 to 100dollars and vam less than 75 [Most like me getting rid of it chipping the computer] Install and run exhaust. [probably need new anyway]. Need turbo exhaust manifold. A few wire changes at computer and good idea now to install 255HP/HV fuel pump. Also need some new fuel injectors. But they fit the NA intake etc. Rest of block, intake, mounts etc same. Now me I would have went 5.0 if Mustang came first. But motor came first for my MGB project. Then found out wife wanted Mustang and I had spare motor. Me I like all the Mustangs, the first to last including the II. No mater what motor.
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1989 Mustang 2.3 turbo, 86 turbocoupe motor, 88 computer,vam upgrade, adjustable boost control, intercooler, c-4
trans, 7.5 345 turbocoupe rearend, motorsport driveshaft, Black interior.