I had 2 setups for the '69 ; one for AWD 799 for a particular event (something like classic muscle dirt) ; and the other for ice drag race …
anyway - I hacked it around for drift and it did ‘OK’ … I got 340k on the fortune island needle climb which isn’t too shabby.
Stock engine - maxed out
Tyre pressures needed changing … on telemetry it showed they were running hot (lowering grip) …
It could do with more work - it doesn’t hold extreme angles very well… I did start playing with toe out and it did improve
It is just a bit lardy
As far as bogging , maybe there is too much space between your gears ? I changed the gearing on my test mule
For drift setups I tend to compress the gears … for example … I will move 4th to where 3rd is currently … then put the 3rd gear halfway between the new 4th and old 2nd
This allows you more flexibility with gear ratio for any particular corner.
Also consider if you need to change the final drive - moving towards acceleration … you will lose out on top speed but you don’t need that