68 GMC engine swap (HELP)

[jonabalco]

hey guys ISO any info in what to do ?? I have a 1/2 ton 2 wheel 68 gmc it had the original 305 V6 in it with the sm24 muncie granny tranny in it i have built a sweet 350 sbc for it i have the different bell housing and got the 2 to mate with little trouble !!
NOW for the big part what do i use or where can i find the sub frame parts i need to bolt the 70's style motor mounts to i have to move them on the frame i'm sure and have 3 sets of hole to use ?? Also the original bell housing bolted the tranny to the cross member but now it doesn't so what do i need or were can i find the new cross member to bolt the tranny to ??!! ANY HELP is greatly appreciated in advance hust need these last few thing to finally fire it up !!