Mounts, motor and trans.?

[BOXER957]

I have a 66 c10 I removed the original 6cyl. 3spd. manual. I am using the original front crossmember. Can I use the original motor mount support brackets? If so what motor mounts do I need for a 350? Next: the original 2nd crossmember, keep or remove? Anyone know what would be the best aftermarket trans. mount (drop) etc. for the 350 with a 700r4 and where to get it? I may be 90 by the time this thing fries the tires for the first time, but that will make it so much more fun As usual any and all help is Mucho appreciated! First time doing an earl 60's and Im'a learnin a lot. Seemed like a good idea at the time, now.....