I bought a pair of arctic cat throttle bodies for the turbo 13b, quite impressive units really.   Here is the problem--  the fuel rail and injectors make the entire unit far too large to use as-is, so the injectors have been deleted.  I have already lopped off the extra fittings on the tb's that allow for a fuel pass through, I've removed the oil fill tube from the center iron and I plan to move it to the front cover (OMP slot) and I may do the same to the oil dipstick.

Since the cowling slopes gently to the spinner, most if not all of my clearance problems occur with the front throttle body.

I tried moving it rearward on the top side of the engine but either the TPS gets in the way of the turbo oil outlet or it points to the front rotor housing and I wouldn't be able to plug in.  I flip it over and it's too tall.

If I dangle it off the plug side, different issues-- radiator duct outlet clearance, alternator interference or if I raise it to move away from the alternator-- I hit the colwing again.

I know that other users have had some success using a Ford Mustang TB, but what did you do with the IACV circuit?  

Is one 46mm throttle body too small?  I'm considering using just one of the Arctic Cat's throttle bodies and see how it does.  The turbo outlet is 2 inches, the intercooler in and out also 2 inches and the TB is 46mm or 1.81 inches.  Take some more away for the plate and throttle shaft and there is even less.  Will force feeding this monster help?  

Please give me your experience with Mustang throttle bodies.  

Where you used a Mustang TB, did you choke it down to a smaller tube afterwards?  

Since I don't have  a flow bench-- do I have any options to see how this TB flows compared to a 2 inch pipe?