I think its a 1.5 but i have to check to be shure. Is it a scs crash box you mean. I have those Dont see clear what it is Looks like old mercruser crash box called daytona i think. Without gearbox i never seen. How to get back and forward. Crash boxes have forward neutral and reverse. Only problem is that getting it in geat you need to shut down the engine and start again in gear. Getting away from the pontoon is a bit tricky. Only racers use them because it can handle big power and are more reliable. Hope it can help.