Thanks for the feedback keodark.

Obviously take out the 2 T3 CPU extenders and replace with 4 T4 extenders. Swap out the 5 downward M thrusters (at the rear) with one L thruster (enclosed).
For looks you may as well replace the forward facing thrusters with L too. much nicer in the original IMO.
Or just use this:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2174174213

Also it may be possible to get T3 with L thrusters under and some careful cargo trimming etc. If I have time I'll give it a go.

Somehow my versions have got messed up. I spend a bunch of time turning the warp drive on axis and integrating it better as in the screenie above but that version is go away - lol.

Can you describe the changes needed to re-tier to T4? Lift is a problem at full cargo, but I really like the warp drive change. Thanks!