Usually some people like to Stroke the L24 engine, when matching numbers come into place i.e. when the original engine is in the car, and one wants’ to gain a bit more torque, and smother drivability. Sure, is possible I did it on my old 1970, many, many centuries ago, I actually bored my to .20, decent power and drove smoother, if I recall I had more or less the same setup that you have in yours. There is an article in Grassroots motorsport magazine on the topic, I don’t remember the issue# but if you go to their web site, perhaps you'll be able to find something on the subject. Rabello sells a kit for what you want to do, so I think, so you’re in the right track.
Good luck,
Alex