Yes they do fit on traxxas 2.8 rims.
Use the application guide from Purolator, http://www.purolatorautofilters.net/resources/Pages/ApplicationGuide.aspx and prefix the part number with a PPL for proline (eg Purolator L10241 = Proline PPL10241)
GM 4 cyl ecotech engine
1992 Mazda 929
V8-302 5.0L engines
LS1/LS1 BASED MOTORS
It fits a 2002 Mazda Miata; 4 cylinder
1985 to 2005 Astro van 4.3 liter v6
Honda 4-cylinder V-Tec like in an Accord.
It is good for my 1997 Dodge Caravan 3.0 L engine
proline!
Ninhydrin reacts with proline to give a red colored product