The ABS system in the MKII MR2 is known to be a bit... let's just say it was the best they could do in 1990. It wasn't great. Better than nothing in certain circumstances, but overall not great. Toyota did improve it quite substantially in 93, and I had retrofitted a 93 ABS ECU into my first MR2, but that only helped so much. My "new" chassis didn't have ABS, but I kept all of the pieces from my original car so I could add it if I ever wanted. But I just never could bring myself to install that ancient lump! But what about something more modern? Like the system from the MR2 Spyder?