1st off... i most likely missed allot of steps, and ill will add as questions are answered, etc etc etc...... and check my spelling later too
IT IS possible to remove your transmission without removing the subframe
Alright, since i recently replaced took the Transmission out of my car, ill explain what i did. (getrag 284 transmission)
NOTE this was with a 5-speed transmission, and i DID NOT have to drop the whole Subframe
1. I started off by Removing the battery from the car/ and removed the drive side brace (felt it was easiest that way) and i removed the hood off the car for more room
2. I took all the lines off the turbo, and then used a 13mm (or 1/2") ratchet wrench to remove the bolts from the downpipe (5 of them) and then the 4 on the x-over pipe.
the turbo has to be removed to access the transmission bolts.
3. i then took off my x-over because i decided to header wrap it up real nice to keep the engine cool everything else is already done so it was planned
4. jacked up the front of the car on the subframe and used an impact to remove the front tires
5. put jackstands (3) on the frame of the car (not the subframe on the driver side)
6. removed the brake caliper from the driver side front rotor. and tied it to the hood hinge
7. (driver side) removed/ separated the ball joint from the control arm, and then remove the strut from the car by taking the 3 strut bolts off (1/2") from the strut tower
8. Drained the transmission fluid
9. unplugged all sensors etc on the transmission, and removed the shifter cables from the bracket.
10. put a jack stand under the tranny, left 1 bolt in the tranny slightly loosened and removed all the rest (18mm)
11. removed dogbones from the top of the engine, leaving them on the dogbone mounts
12. went back underneath and removed the bushings from the driver side., had it jacked right the control arm on the subframe
13. slowly lowered the jack and the engine and tranny went on a nice angle.
14. removed 4 bolts off the tranny mount
15. removed that last bolt on the tranny
16. pulled and pulled until the tranny finally break loose from the engine
17. slid the tranny out the wheelwell.