Outer Limits 4x4 Board

Hey guys, Im after some opinions on what motor to run in my lux.
I have just won a 3.8ltr vs Commodore v6 and auto box complete for $100 on eBay, it is supposed to be in reasonable condition but has been in dry storage for a number of years, the engine and gearbox look very clean and tidy, but I havnt picked it up yet so I haven't had a first hand look.

Atm I have the bog stock 2.4 diesel which has clocked up 550 000 km's so its getting a bit tired is defiantly no power house.
So should I do the swap? All up the engine would cost me $180, plus an adaptor kit so it does add up in price. The work doesn't phase me. But the hardest part would be an engineer's cert. And the cost of it. Say $1500-$2000 for a certificate these days I think?
So is it worth it? Or should I just rebuild the 2l ?
I'm thinking rebuild the commy engine and change a few components to suck some more power and when I have everything ready ill swap it straight over, and sell the diesel motors to make some money back.
Should I swap the gearboxes while I'm going?

Thanks heaps everyone.

theirs one on gumtree with all the work done, 4g negotiable.
has a bit of stuff on it, might save you the hassle
vp v6 auto.
very VERY keen to sell
qld gympie though.
0431572446

Something to consider and depends on driving style tyre size but your more likely to break stuff with the extra power.

i got a dual cab luxy with a ecoteck v6 in it. marks adapter kit for the belhousing and it will bolt onto your original hilux gearbox. just gotta sort out all the electrical and mod plate. ive never looked bak since doin mine. heaps of power and decent economy.