Outer Limits 4x4 Board

I have 03 dual cab hilux which is a 3lt turbo diesel. I run 31" tyres and have a snorkel and a 3" exhasut from the turbo straight through plus all the other usuall bar work and other goodies.
I was wanting to know if anyone has fitted a DP chip to there hilux and what they thought of it
Also wanted to know if anyone has fitted the GAS TEK diesel gas system to their 4wd and what they have to say about it. It looks to be the best on the market as it is the only one with a true injector and is fully computerised.
Finally has anyone fitted both a chip and a diesel gas system.
I am after more power as I tow a camper trailer

Any info would be great before I go and spend the dollars.

Thanks

surely someone has put both a diesel gas system and a chip in their 4wd.
Any info woud be great

Been doing heaps of searching, about chips, and one comment i came across, was the bloke thought gas was the go, similar power but the better fuel economy outwayed the chip