Lentech also sells the street terminator rebuild kit if you can do it yourself. It's a lot cheaper than paying $2000.00 for them to build it.
You should get a solid one piece input shaft, 2400 rpm non locking torque convertor, street terminator valvebody, and the biggest trans cooler you can fit under the car. Also a deep pan (if you have ground clearance) or at least a drain plug kit would make servicing it easier in the future.
If you have a shop to do the rebuild, ask them what they would charge if you supply the parts.
B&M sells an AOD Transkit that has some stronger internal parts and clutches but the Lentech will be the strongest and matched with the valvebody should be all the trans you'll ever need. Unless you plan on running faster than a 10 second 1/4 mile the lentech spec trans and lentech valve body should be more than fine. It's very durable and as long as the TV cable is set right you shouldn't have to worry about it breaking.
http://www.lentechautomatics.com/aodoverhaul.html
http://www.lentechautomatics.com/aodpricing.html
Street Terminator AOD is rated to 700 hp.
I have a bone stock AOD with a lentech street terminator valve body, b&m drain plug kit, and the TV cable set to max. It will get 2nd gear rubber at anything over 1/4 throttle and at 1/2 to 3/4 throttle it will get 3rd gear rubber on the upshift.
Mine shifts out of 1st under light throttle at 15mph and out of 2nd into 3rd at 30mph. It shifts into Overdrive at 55mph as soon as I lift off the gas. If I keep my foot on it it will hold 3rd until I let off so it can shift. It prevents WOT shifts to OD which can burn up the trans fast.
I change my filter and fluid about once a year and use regular dexron III fluid. I currently run a stock torque convertor but I want to upgrade it to a non lockup unit with a higher stall speed and change the rear end ratio to a 3.73 or 4.10 since the SC is heavy. In your spider I'm not sure what rear end you are using so I can't recommend anything.
