D-3 Works will soon offer for mail order the 1/35th F-Boot as well as other Ma.K items. This production run will include a photo etch air intake.
See here for details: http://d3works.blog85.fc2.com/blog-entry-100.html
And here to order http://www.hlj.com/product/D3W0014/Sci
I'm not sure what the cost of the kit will be yet. As I understand, it and the 1/35 Grief will be sold through HLJ.com.
Below, pics of an earlier D-3 Works' run of the 1/35th F-boot with 1/20 mechanic for scale comparison