Without a trick diff very much so, when my 160 was stock with full race slicks still had bad wheel spin out of tight corners. Lot of it is down to management of the throttle, I came down for tracking my Mitsubishi Evo which was 4x4 so had to get back to fwd thinking
Trick diff? Like a quaife or would it be something more specialised?
If money is not an issue then go for something different. However as already said a healthy KV6 is still a very capable choice. Why upset a well balanced set up? A well cared for and free breathing V6 can hold its own, chuck in a lightened flywheel as well as a LSD and you will be on your way. I've thought about many changes myself but can't justify the costs. Happy with what I've got.