Making a Trail Rig

[Patriot]

Hey fellas, I am going to be making a trail rig this year and will be looking for a K5 Blazer as my foundation.

My questions are..

Have you guys made a Blazer trail rig before?
What is a better tranny, a SM465 or Auto??
What is a good tire size and lift?

I have 2 1 Ton trucks I will be parting out, a 4x4 and a 2wd. Both are duallys.
I want to use my Dana 60 front and will need to find a 14 Bolr rear(unsure)?? I am unsure about the rear off of my donor truck because it is a Dually rearend(it is a 14 Bolt dually on the truck). The other truck is a GMC 30 Camper Special with the 10,000 GVW Dana 70HD. I can't use this axle because it is also a dually, correct????

So in short I want to build a Blazer with my Dana 60 Front and don't think my dually rear ends will work for my Blazer(I will be looking for one soon).
The 4x4 Dually also has the SM465 and 205 T-Case. I want to use these but what do you guys say?? By the way the donor trucks are both 1979s.

Thanks in advance fellas.

[Matt Man]

cant beat a sm465 with a 205 t case the dana 60 front is very strong, and i would use the 14 bolt in the rear i think you can change the hubs on it, i dunno if the dana70hd is actually stronger but with 1 ton running gear on a trail rig is basically bulletproof, i would prefer the sm465 because of the REALLY low first (granny low) gear in it.
Or if you dont want to change hubs try to find a 14bolt out of a 3/4 suburban or single wheel 3/4 ton or 1 ton.

[Prerunner1982]

You can use the dually front and rear with the dually hubs and run Hmmwv beadlock wheels. The dually hubs works with the wheel offset to bring the tires back in under the vehicle.