hi need to put together a set of late sporty crankcases together , this is the model without the gearbox trapdoor , have a new factory manual for the job , she is going to be a high comp 1250 c.c.  drag race engine , i have done early models with the trapdoor , but has anybody had any hands on time  with this model engine as she needs to be tuff , is there anything i need to look out for esp inb the gearbox , as it's to hard to get back into after the race setup is done you have to pull the hole engine apart to get to the gearbox ,  cheers Bob

this crank has been rebuilt & stich weld crank pin ,   i have a brand new factory manual i will have to read it 10 time 1st