Other than GM I don't think any had the factory type baffling in them.
I've been running an aftermarket tank for about 9 years now in the WE4 with no issues ever including racing with 5 gallons of gas, I don't lift the front wheels however.
Never been an issue with driveability including brisk cornering.
I've had my aftermarket tank for about 5 years with no issues either. If you're going to race keep at least a 1/4 tank in it, that way you know you're not going to starve the pump.