Took me about half an hour to do my quadrant and firewall adjuster, and I didn't remove the front seat. I'm pretty small though, I also recommend removing the driver seat. I also didn't have to disconnect the cable at the bellhousing end, but that's cause my stock adjuster was busted (slack in the cable).
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'91 LX Hatch, 17x8.5 ROH ZR6's, lowered, 3.73's, offroad H pipe, SN Cobra cat-back, ASP pullies, 14° timing, C&L 76mm MAF, 170A 3G, B&M Ripper on a T5
Best ET run: 14.593 @ 94.62, 2.292 60'
Best MPH run: 14.728 @ 95.72 mph, 2.423 60'
Best 60': 2.230
1991 LX Hatch 5.0L