They should be plenty big enough, we have 250cc in at the moment and they had plenty of headroom left on the last build. Will be interesting to see how far they go on the next build but they should just about hold up based on simple injector size calculators
What are you planning karlj, mounting carb bodies onto stock inlet manifold runners and rigging up an airbox/filter setup with MAF to meter airflow?
Xmas day is always a good excuse to tinker. I'm in Norway this year but it's family tradition to be underneath an e-type by midday on xmas day