Excuse my ignorance

[8ballautomotive]

Hi everyone, I'm new to the forum, new to c10's and pretty much new to American vehicles in general. I'm from the UK but moved to Dubai 3 years ago and since then I have really started to get into muscle cars as a lot of the cars over here are American.

I have recently bought a 1980 shortbed, fleetside, automatic c10 and have many questions but the first thing i need schooling on is upgrading the engine/transmission. I want to swap the tired old engine and gearbox and the easiest and cheapest option for me would be to buy a turnkey crate engine and gearbox combo and ship it over from the U.S.

I have seen this and similar ones on ebay:

https://www.ebay.co.uk/itm/383-STROK....c100752.m1982

So I guess what i want to know is what are the potential problems i may face with buying this or similar.
- will the gearbox bolt straight in? The one on the link is a 700r4 or should i go for one with a TH350 (i believe that is what it has now)
- will the axle etc handle the power?
- is there anything else i need to consider before buying?

I'm not interested in top speed i want the 'throw you back in your seat' acceleration, I will use the truck as a second car just for fun.

Any advice would be much appreciated.