could use a little guidance

On my sister-in-laws 66 Barracuda I installed a 340 engine and Ford 8.8 with 3.27 posi. working with 904 transmission I am hoping to end up with a nice driving car. Sub frame is connected, 4 wheel disc, rebuilt manual steering and A/C added, this is Texas. Not stock, but close enough. Little room for exhaust under the Barracuda's at the engine and transmission. Mig welder might be a must have item. Could also have built a 318 late model roller cam engine.