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Just get second hand genuine or import heavy duty ones from independent4x

All mine have run at around 65 degrees Celsius crusing at 100km giving it all it had max temps were 94 I ever saw on a 30plus day

Yes runs a 4jh1 with top mount intercooler, different turbo and a manual transfer box, they are far better than the ra model

Can run all of the gears other than the injector pump gear, so short answer is no they don't all fit, the 4jh1 is quieter because they run spring loaded idler gear on the injector pump and the 4jb1 doesnt

if you want a coil rear end best way is to use a swb bighorn chassis and bolt the mu body to it and swap everything over that you want off your chassis

I have some ubs55 axles, can also fit new bearimg kits to them if you would prefer that

just use a screw driver, pry the seal out then just bend the speedy sleeve till you can get it off the crank, normally takes about 5 min

I run a 8 button clutch plate and custom 3000lb pressure plate, also running a bigger diameter flywheel to run bigger clutch setup, normally strips 5th gear first and spreads the main and lay shafts apart, then just works it's way down till I only have fourth to limp home

Have run 3 different brand egt and all well over 900 degree celcius, never run on a dyno, has average power, goes far better than my stock 4jj1 colorado and have blown 5 gearboxes in it and 3 clutches to pieces so must have some power

I use autometer gauges not cheap rubbish, keep putting fuel in it will get way hotter than what I said, ie seen the manifold go white from the heat, turbo builder was worried it would melt the wheel