New Member Z71 questions

[Wranglercubtx]

hey guys i am new to this board and got a few questions. I finally talked my aunt out of her Chevy Z71 She bought it when i was in highschool and have loved it since LOL even took it to prom LOL its a 1993 Chevrolet 1500 Silverado Z71. Two tone black top and bottom and Sand beige in the middle, regualr cab short bed. its been parked for 4 years her and her cowboy husband bought matching F250 crew cab 4x4s. sickening LOL anyways the problems it has

1- in 96 i wrecked it and they replaced parts of the 4wd system well in something the transfer case or front axle they didnt put enough grease and ti chewed the gears up. it drives but wont engage 4wd she cant remeber which went out how do i find out transfer case or axle?

2- the heater core and it overheats. i plan to bypass the heater and change the thermastat how hard it is to replace a heater core?

3- TV cable?? she said TV or TB cable . Seesm you gotta manual shift through gears and it wont shift automatically a guy told her the transmission needed rebuilt but my buddy says it is easy to fiox ANYONE??

4- what fluid should be changed ? they start it 2 times a year i wanna change the oil new battery and ya think i need to drain the fuel? i was maeesin with it and when i took the cap off it was pressurized. what else before i start it for the first time?

5.- the saddest part of it all LOL the tires that were on it were traded for something and she put these god aweful tiney tires on. its the Z71 star 16" rims i was told 245 75 16s wer e stock, and i can put up to 295 75 16s and maybe 305 75 16s. now canyone have pics with the differnt sizes look like? ive seen some that look to big but i dont want em to small. i also got the bushwacker extendafender flares on it so it sticks out 4 nches or so advice?

thanks
Jeff
Dallas, Texas