Larry, Please don't let 2 missing small pieces of flat aluminum stock delay you from enjoying this fine flying model. No "cobled Up, make shift looking" parts will be necessary! These are about as basic, easy to fabricate parts as you will ever encounter. Go to any good local hardware or home improvement store and buy a length of 1/8" thick 1/2" wide aluminun stock. Cut 2 pieces 2 3/4" long, measure and mark for the 2 holes to mount the strap to the existing wooden motor mount. Drill the 2 holes. You now have what Sig supplied in the ARF kit. Follow the directions in the assembly manual for mounting the engine of your choice. Sig even gives you the original part dimensions in the parts list, 1/8" x 7/16" x 2 3/4". I made my replacements (the originals cracked after a while) 1/2" wide not 7/16" as there was room with my engine (OS 46 FX 2 stroke). So far the "new" ones have not cracked. This should take you about an hour or so to make including polishing them up before final assembly so they don't look "homemade". EZ-EZ-EZ, do it!