euro 323 with L-Jet

[bmw02m20]

Got a tired euro 323 w/ L-Jet. Looking to improve performance amd I need some guidance. First, can I use the 731 head with a stock eta or Seta bottom end? If either of those work, could I use the 731 head and change to motronic and bag the L-Jet?
I am trying for a really budget improvement, while I build an m30 for transplant later.

[euroshark]

I wouldn't upgrade from the L-jet yet, just wait till you go for the whole M30 swap. L-jet isn't a bad system, if you rin more fuel pressure, bigger injectors, a more aggressive cam, some headers and MORE advance, you can make that thing scream!!! My Alfa 3.0 was L-jet and it responded incredibly well to just more fuel pressure and more timing advance... That's my recommendation.