How do the V6 headers fit with those motor mounts ?
For the bellhousing I would use a V8 Monza setup, it uses a 10.5" clutch and the same cable type fork as your Vega but it bolts to a 4.3 V6 or a small block Chevy V8.
this allows you to reuse the stock Vega clutch pedal and cable linkage.
Truck bellhousings usually use 11" clutches so they take up more room at the firewall and the do not use the cable fork linkage.
Most Vega engine swaps will require some firewall massaging with a large hammer for bellhousing area.
zerks can be removed after greasing or newer style inner tie rods have the zerks facing the rear of the car instead of towards the oil pan if you are replacing them.
after you clearance the firewall jack up the trans tailshaft as far as possible and recheck the oil pan clearance, you may still need a modified steel pan.
https://kevkoracing.com/collections/4-3 ... -3l-v6-pan Kevco Racing makes 4.3 pans for one or two piece rear main seal blocks but you would have to call them for a V6 Vega pan.
It is best to leave the steering link OEM, level the motor and mod the oil pan if needed.
ACE 71-75 trans cross member welded, Satin black powder coated.Part # 10530 $ 111.61
ACE 71-75 trans cross member with brackets un welded, painted. Part # 10538 $ 102.83 -if you have a welder I would get this one, after the engine is in place and level. install and tack side brackets to the xmember rails, then remove and weld it off of the car. Paint and reinstall.