All I can tell you is you're confusing "loose" with "flash". Re-read my last post. You can get a converter that will flash to 5000 RPM and will NOT be loose one iota on the street. I know that's not what you need, I'm simply making a comparison.
Today's converter technology does not mean a "loose" converter at all. You need to call a reputable converter company and have a long talk. Tell them every single detail about your car, what's in the engine, ALL of it, what gear you're running, the as is curb weight, EVERYTHING. Then they will give you their best recommendation. Let them know you want a converter that'll perform the best with your combination but still be tight for street use.
Precision of New Hampton is an excellent place to start. They manufacture their own converters and make a fine product at competitive prices. I dealt with a lot when I worked for a local transmission shop. Good people. Then after you talk to them, if you're still not convinced, get a second opinion. PTC, Dynamic, Coan...those are all top notch converter companies. I bet they will all be within 500 RPM of each other's recommendation and it will likely match what I said......unless you tell them you want to drive the car like granny on the way to church on Sunday.
