[Amps] RD100HHF1 work in 6m

[Hsu]

Hi.,
     I’m thinking to build a mobil amplifier  to replace my SG500 in my Golf.
It will cover 160-6m, there are some  projects:a) 2X4XRD100HHF1 parallel and Push-pull,
b)2XRD100HHF1 pushpull as a PA model , four models combine together.
  a ) is the simple and less cost, but b) seems logical.
Although RD100HHF1 rated at 30Mhz, but many TRX use it in 6m and the out put power no drop.
   But I ‘m not sure  4X RD100HHF1 parallel together can work in 6m,any suggestion?
      73!Hsu
  PS, sometimes, If I run my SG500,my Golf’s engine will stop, not often like this.Is is it due to the battery’s problem?