hi, thanks for this opportunity to start in this safe zone. even though i'm a 58 rev head ,i'm not used to "posts,threads,etc".i live on the sunshine coast,drive a tidy u13 attesa,which is being rebuilt at the moment. i love this car. i must love it. iv'e showered $$$$$$$ into it. for example, custom exhaust manifold,dump pipe,mandrel (3")exhaust.hi flowed 600 cc injectors. microtech lt8 computer,bosch external fuel pump,custom surge tank,custom air box,custom bar/plate intercooler.gt2871r 400hp rated. ppg gearbox.. mercury motorsport 4 wheel dyno showed 175kw at all wheels...then i broke it.. 4 wiseco forged pistons all cracked, no sign of detonation, not 1 bit of ringland damage.. go figure..anyway still i love it .i look forward to any discussion that this post might generate.o by the way.. i'm in dire straits for an attesa u13 standard block #78e.i would be eternally grateful for any info as to where i might track one down..thanks again,graham..