Wickedmayhem just broke a mildly built 4l60 with a tuned n/a 5.3 in his luv, not saying your wrong about yours surviving cuz idk your plans for the tranny but stock it will be in pieces quickly with even 500whp
I would shoot for a disc brake 9" ford rear end just so you never have to second guess it, and they are easiest to find already narrowed
Whats your budget for the build look like? The frame itself is really strong for a mini, fully boxed with some thick steel, may be wise to add some gussets and extra bracing to the front corners 600-700hp is a pretty outrageous amount of power for a little truck that came with 80hp.
Would love to see this thing do a 1/4 mile
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Luvless
1980 Mikado-Sold.
1993 Lexus SC400 my Daily
2004 Yamaha WR250F my new love in life
2016 Toyota Camry my girls ride