Would be too far out me thinks, considering the starlets larger bore...go up to 1.5 with that block??
Oddly enough perhaps a modified Figaro might be easier, port spacing still differs but not too far..from personal experience.
Also stuggle to see how a conversion plate would "look" better, Would need to be at least an inch thick to avoid any harsh turns. Properly ground down welds aren't noticeable.