The 13bt is a strong engine and good power, not amazing, many a good story about them and many not so good, I bought it for the same reasons all your guys did, but I got fingered, I didn't see good fuel economy I didn't get the reliability. I sold what I could to get another daily driver and I don't regret it.
The H engines are well supported here and maybe an option, I understand the ease of the b to plug and play but I don't see me going down that track again.
There is plenty of F engines as well but no thanks. V8 have a bad rep of sucking the fuel, but that depends on how you set them up and drive them, and are usually better on fuel than toyota petrol engines, which most of the v8 parts for sale are ones that some one has changed from an F to a v8 and now want to go diesel spending all there dollars on an over priced diesel to save the weekly fuel bill not taking into account the amount they are spending changing the engine to a diesel will actually take a few years to balance the till.
If I was to buy all the V8 conversion bits new it is an expensive exercise, but as you say Rosco there are heaps out there for cheap second hand with all the conversion bits. A standard V8 can last decades as well. There is many options these days and the right option for me will present it self in time.
Thanks for the heads up Oldtoy