1966 with gear vendor

not really...
two basic ways to go on and A, mod the crossmember and lower the whole thing so you only need to beat on the floor, or cut the floor and hang it on the stock mount. the lower you hang the trans, the more work you'll probably need to redo the exhaust.
View attachment 1715692860

2 1/2" TTi crossover / GV heater before eliminating it
View attachment 1715692861

you'll love it once you get it done
NOT early. Will not go in unless you dropped the cross member 2 inches... Not practical IMO...And the pinion angle would be honked up, not to mention the fan getting close to the radiator...