2JZ VVT engine swap in an Early A Body?

I love the 1UZFE motors (Lex V8's) as the one in my SC400 is rock solid, Im just waiting for the body to die around the motor and trans but that will be a while, but the paint is already on its way out. But to say the Toyo motor will make power for the next 50 years is a stretch....too many sensors, vacuum servos, electronics to keep them running that long. Getting a mandatory "anti backfire valve" for my 82 Mazda truck was near impossible, long out of production and every site listed was OOS. They just dont make them anymore and this is a wear part! (diaphragm rots). Finally found one at U-haul fleet Ebay site, last one! If you want a true 50 year mill, go carb. even the VVT 1UZ's (2UZ?) will have to get that VVT servo services one day. I think Chrysler/Nissan had a joint venture on a forklift motor, maybe Diesel/LPG?