Opinions??? 2ZZ Swap

Sorry, I don’t have any pictures at the moment. But a classmate of mine who loves Celicas, bought this 01 Celica GT-S (Manual 2ZZ) from some lady he knew. Which it has some sketchy work done to the radio and paint and such, but the engine and transmission are in very good condition (~130k). While my celica is in decent condition with ~170k (automatic 1ZZ). He’s selling the GT-S to me for 1k. Do you think this is a bad idea? I’d love to clean up, overhaul the 2zz, swap that engine and transmission into my Celica and do a rear brake conversion! Please give me some opinions. I would love to do it, but don’t know how hard it might be putting in all the new transmissions lines, cluster, PCM, and wiring harness???