My first thought was "no way the 61 Four Stroke will fly a 60 size trainer."
It is possible that it will.
The ASP 61 Four Stroke probably turns a 12x6 prop at 9,500 to 10,000 rpm.
The problem I see is getting it in the air, especially if you have a grass runway.
The 60 size trainer will weigh about 7.5 pounds and you'll have about 5 or 6 pounds of static thrust to get it moving.

My brother and I put a Magnum 61 four stroke on a World Models Sky Raider Mach I which is a 40 size trainer. We did not feel that it was overpowered at all but it was not a very good combination, for us. Maybe it was just this particular plane but it just did not 'fly right' for us. When I crashed it we were not sad. We replaced it with a Great Planes PT-60 with a 91 four stroke and liked it a lot better.