Rebuild or leave trans?

That seems like it was a very extreme case and caused by using something to extremes that it was not meant for. So from that the event of a failure would be very unlikely for a light car.

My old cam said it could be used with a stock converter, but a 2000 would be best. I think my converter stalled at a bit over 2k, maybe 2200 or so by holding my foot on the brake, maybe more, I dont really remember(I didnt think factory ones were that high). My new cam recommends about 2700 stall or so. It would probably hinder performance more with the stock converter, but I can always change it out in the summer.