piston slap isnt needed to be cured, it's just a natural result of putting forged pistons in it, If your worried about it get it checked out by a specialist.
type r has dccd, two doors as you say, shorter ratio gearbox. type r also has no abs. Higher rev limit. basicly its alot more raw than even the sti.
of the two, i'd get a type r every time, which i did haha
not so in practise, the change to roller bearings mroe than makes up for it, my 34 considerably outspooled 35's on other cars with same spec. Although with the caviat different cars react differently and i never tried a 35 on mine. For the price of a new 34 your nocking on the door of an sc36 which will outspool and outpeak both, really depends on how much you want to spend.
on a stock wrx motor i'd say stick with a 35 as the price is alot cheaper and isn't gonna push it beyond the limit of the box and engine.
Season 7 is live, well worth a watch
sad thing is subaru is on the rise in the US since they embraced ralying and world rally cross, shame subaru UK are to dumb to realise it 😞