Gonna change filter and fluid and wondering if the 700r filter will work with the stock pan.I'm assuming the gasket won't so I'll have to get a gasket for the 200.How much fluid to start with?Is it correct to overfill by a quart or not?Dexron or type F?Is the B&M any good?Presently has the Mobil 1 synthetic but don't know if I'll be able to afford it this time.Can I mix any of the above mentioned fluids with what will be left in the converter?