Splitting cases? To add stroker crank!

I've redone many top ends, never split a case, need tips on it, eventually may add stroker crank!

disassembly:
http://www.blasterforum.com/threads/blaster-engine-disassembly-vid.42997/

assembly:
http://www.blasterforum.com/threads/kor-engine-assembly-vids-no-crank-puller-needed.51169/


+3 requires no trenching of cases, but cases may need clearenced front and back sides where cylinder sets into bottom end.
that requires a complete mock-up of top and bottom end

+4 will require trenching the cases, and should be done by a professional.
 
disassembly:
http://www.blasterforum.com/threads/blaster-engine-disassembly-vid.42997/

assembly:
http://www.blasterforum.com/threads/kor-engine-assembly-vids-no-crank-puller-needed.51169/


+3 requires no trenching of cases, but cases may need clearenced front and back sides where cylinder sets into bottom end.
that requires a complete mock-up of top and bottom end

+4 will require trenching the cases, and should be done by a professional.
A +3 will be fine for my first time, I'm gonna contact KOR tomorrow about porting my 240 head and for guidance on the correct type of exhaust , thanks for the downloads!!!