you must have not been doing it right then. a 3rd gen 4runner or taco CAN be ran with 35's and a front locker without 'snapping CV's like crazy'. ive done it, lots of people have done it. were you running stock gears? probably. we werent...and thats a big thing. ive followed many a SA truck and theyve all been surprised to see where my old 4runner went with em.
its all in the driver when theres a weak point like ifs + front locker + big tires. the 3rd gen 4runners/taco was a much better IFS than the 2nd gen 86-95 trucks/runners. if you had a locker up there...you just gotta know its breaking point, and a proper setup for it. knowing to get off the throttle helps too. not to say nobodys snapped CV's...but to say that its out of the questions is just plain misinformation. it works...and works awesome. besides, changing a CV on an ADD truck (flanged hubs) is about as easy as it can be and can be done under half an hour.
to the OP: a locked IFS 3rd gen (96-02) 4runner or taco (95.5-04) setup is much better (read: stronger) than any stock jeep D30 front setup. find one with an oem rear locker (should be a button to the left of the steering wheel labelled 'RR DIFF LOCK'. to fit 33s, youd need about 2.5" to 3" of lift..which is about as much as you'll want on these trucks. to fit 35's add some body trimming, firewell pounding, and a 1-1.5" body lift. much more fender trimming if you want to keep it low and eliminate the body lift. check out yotatech.com or ultimateyota.com for lots of specific 3rd gen runner info, and ttora for taco stuff.
that being said...a locked 80 is the cats meow. it handles trails just fine..even a lil mud if youve got big enough tires on it. muds not our thing really (hence the sites name

) but its an excellent all round performer with oem lockers and solid axles. kinda like a JK rubi...but came out 16 years ago. as awesome as my old 4runner was...and well it wheeled...it was still a notch under my 80. and yes... stock 80 birfs (solid axle cv joints) CAN handle a front locker with 35s..id say up to 36 and maybe 37's with longs, cromo'd gears and shafts..etc.