There is a very good and very cheap 88-108 Mhz 14w apmlifier. You can find all the components from farnell.co.uk.
Parts List 14 Watt RF Amplifier
C24, C27 – 470 pf mica capacitor
C25 – 100 pf mica capacitor
C26 – 39 pf mica capacitor
C28 – 15 pf mica capacitor
C23, C20, C31 – .001 uf disc...