For oil I use either SUNOCO racing 20W/50 or Silkolene Pro S, dump valve is a collins diaphragm one, much louder than piston types, drilled out holes to increase noise.
Air filter I have a group a cone(K&N), plugs depends on engine spec, but std and up to around 280 or so I would use AGPR12PP8, with a group a coil, 0.65mm gap, above that a set of IK31, or 071 would be safe in anything, but won't be quite as smooth low down.
I always use Magnecor where I can, don't know if you have coilpack ?, if so a ACCEL 140018 coilpack improves matters as well.
tabetha