2strokes and aluminum frames are not a good mix
unless you make custom mounts the 2stroke kits will not fit due to the odd tubes the frame uses.
Even mounting a friction drive to this bicycle is a tricky job due to how the frame is made
Being that it is a full suspenion bicycle you would need a custom chain tensioner and the Sick bike Parts shiftkit mount will not fit this Bicycle due to the tubes used to make the frame. The stock Vbrakes are stamped POS and need to be replaced with better brakes
Yes traveling at redline/WOT will shorten the life of the motor 4strokes are built much better
I do own a avalon so yes I do know the short coming of that Bicycle
Live life as its your last day... it just may be
Learn to do it right or how to fix it later, quicker to do it right the first time.