I cut four sets of OS32 bolt pattern mounts last night, and set the prop driver 0.1" ahead of the nose ring. Bonified WN - the ASP should fit this bolt pattern, see below.
Running a big block requires a bit of improvisation, I don't have a CAD designed mounting scheme yet. In truth it is best to wait for a modified version for this format engine - a bit more wing, tank on CG etc. I have been sketching ideas, they will come.
This is handy info below - and the OS site has bolt patterns as well. At the Novarossi site, you can download corporate logos in various formats, and buy hats and T-shirts, but you can't get &#^%#$@ dimensional specs for the engines, only very badly translated instructions.
Here are the OS46 and OS32 bolt patterns btw. For other engine mounts I need:
A,B,C and E. I need E to locate the engine fore-aft.
Editing and cutting the plates is easy for these onesie twosies right now. For future, I will mount plate sets separate from the other parts so they can be a la carte.
Dimensional Specifications For Jett Engines

ALL DIMENSIONS ARE IN INCHES
ALL WEIGHTS ARE IN OUNCES
(25.4mm = 1" - 28.35gm=1 ounce)
TYPE DISP BORE STROKE WT* RPM RANGE A B C D E F G H J K L MBSE35 .355 .787 .730 13.8 2000-20000 1.50 .590 1.22 2.10 2.156 1.61 1.27 1.57 1.378 1/4-28 1.375 5.3SJ40 .398 .846 .708 17.4 2000-18000 1.73 .689 1.38 2.50 2.45 1.63 1.38 1.58 1.50 1/4-28 1.50 6.2