'66 C10 5.3/4L60 swap questions...

[victorallen]

I'm planning on a 5.3 / 4L60 swap into a '66. I've done a bunch of hot rods, restorations, fabrication work etc so the mechanical part doesn't bother me but I'm new to the LS stuff and frankly am a little intimidated by the unknown. I've read/researched until my eyes are crossed. I know there are a ton of posts on this but a lot of them are a few years old and a lot of the information is scattered about. The donor vehicle I have found is a wrecked '01 Silverado 2WD with 104K miles. The truck I'm planning to do the swap on is a '66 short wide bed, big back glass, factory V8, auto, PS, A/C truck. The original engine is long gone and the truck is solid but fairly ratty. I just finished a '65 short bed (383/700r4) and am just wanting the '66 to be a good reliable driver and am definitely wanting to build it on a budget. A few of the questions I have are:

1) What are the best motor mounts to use? I have the stock towers and would like to use them. I've seen ones that basically are just an adapter plate that use the stock style mounts, does anyone know about these?

2) Although this truck has the factory slave type power steering I will replace it with a later model power steering box. What's the best way to connect 70s or 80s style steering box with the 5.3 pump?

3) Does the A/C compressor have to be relocated to the top of the engine for clearance purpose and if so what brackets can be used?

4) Is there any issues with using the drive by cable and the ECM from the donor truck? I'm not planning on using cruise control.

5) I'm not wanting to spend the money for an aftermarket wiring harness but I've heard that the wiring harness from a car is a lot cleaner and easier to use than the truck harness. Would it be best to get one from a car or just have the truck harness reworked when I get the ECM programmed?

6) On an application like this is the stock cooling fan OK or would it be best to go with an electric, and if so just an aftermarket fan or is there an OEM that works better?

7) What's the best fuel pump top use? I've seen a few people use the inline Walbro with the corvette filter/regulator and keep the stock tank, any ideas on that setup? Since this will be a budget build I'm really not looking to buy a $500 fuel tank but wouldn't be above a swap to a factory tank under the bed if anyone knows what will work best.

8) What's the best headers or manifolds to use? I'm not wanting to cut the frame up so I'm guessing stock manifolds probably aren't an option. From want I can tell a mid-length header may be the best option. If so what is the best fit for this application?

9) I'm thinking of using a stock dimension aluminum radiator, what hoses will work with the 5.3?

Thanks in advance for the information and I apologize for asking questions that have probably been answered several times. I just thought I'd see if there was any new stuff or ideas out there and if possible to get the information in a somewhat condensed format.