H23a Vtec swap into 94 accord. info help

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New Member
I purchased a h23a vtec auto obd2 motor for my swap in my 94 accord which has the f22b vtec auto in it obd1. got it to my tuner shop and they are telling me it a headache to put in.. even tho they have done h22 swaps. im wondering what the big differance is.. one thing is that they are telling me its a wiring nightmare i need a custom harness at about 600 bucks??? and a few other parts to make it run right.. if anyone has done or familar with this swap could you please help me thanks.