There are many differrent options.

1. Use a MFI inlet and make the RST throttle body fit the inlet
2. Use a RS1600i inlet, the RST throttle body fits fine without any mods
3. Use a MFI inlet and a KE-Jet N/A throttle body. Really rare for you boys, iirc this engine wasn't sold in the UK, it's a 1.6 CVH, 8,5:1, 90 hp cat engine with KE-Jetronic. But I've seen a Ford adaptor plate in a thread here a long time ago, made the RST throttle body fit the triangular shape of the MFI inlet manifold...





Belonged to a friend of mine. Used to ran on WM management, later on VW Digifant. But the setup with the RSi inlet and the turbo throttle is just how you want do do this!?