Well I guess you wont have a choice to use the 65mm spacer. Is this the EGR delete spacer ? Your tb is smaller than the spacer but I dont see why it wouldnt work.
About the cruise...the ONLY part you need is a fox 87-93 5.0 cruise cable. Thats it. You'll have to take the driver inner fender (plastic) that holds with a few clips. Then you'll gain accessibility to the cruise unit, which is wrapped in a rubber "shield". Take it off. Take the unit and open it up to release the stock cruise cable. Remove the stock cruise cable from the engine bay. Install the fox cruise cable in the engine bay and same route as the stock cable. It will attaches the same way as the stock cable. Works like a charm.
I have like 4 pics of different parts/views for this cruise conversion. If you want them let me know.
I didn't think about it like that. (I should just get it the same size as the intake opening right). It will be on a street heat intake, so I believe I should get a 70mm. Althought the TB will still be smaller than this.