See why couldn't custom gudgeon pins be made for this sort of thing?

find a better piston
work = money
go to an engine reconditioner and ask for some old pistons w/ pins to measure up (they will be in a bin out the back)
do a dummy build and MEASURE your compression ratio dont guess
get some parts catalogs

Like I said in my previous post, i've done this a few times without any problems.

Over 15yrs of rallying the A-series motor and not one bottom end issue.

Here is a piston cataloug. http://www.jccpiston.com/ I've spent hours pawing over it, and the best slug to use is the mazda one. (At least for the A15's.) There are more options for the A14 though.

I'm going to be using the E5 slugs in my current A15 build.

guys,how about gasket?is there any aftermarket gasket that available?or do u just customized it?

we dont have it (aftermarket part for datsun) here in malaysia.. :(

Dundee1000 should be able to get a hold of the Nismo head gaskets, they come in 2 thicknesses and are suitable for large overbore applications.

thanks for the info

any idea about the pricing?