Reply to "Cylinder head choices"

Be aware that this is a simple question with a book-length answer. Before deciding to change cylinder heads on your car, first ask yourself what you expect from your Pantera, which in well-tuned almost-stock form, will equal or exceed 150 mph while out-handling & out-braking any same-year 'other-make' car on the road, and still get 20 mpg. All a changed- head can do is give you more of the same (except gas mileage). OK- once you decide that you do want 'more', you have 5 choices in no particular order:
1)-Aussie 2V closed-chamber heads
2)- U.S. 1970-71 4-V closed chamber heads
3)- 2-V open-chamber heads (which may come from Australia but are virtually the same as U.S. truck heads available in wrecking yards for $25 each)
4)- U.S. 4-V open-chamber heads (all 351-C engines '72-up)
5)- aluminum 'SVO' racing heads of nine different varieties.
All the above heads have at least one good point and one or more bad points. As mentioned, the open-chamber 2V heads are very cheap, while aluminum racing heads may cost up to $4000 to get them bolted to a running engine. The old saying is, "Speed costs money; how much you got says how fast you'll go!" This was only a brief summary. I suggest you search the archives here and on the DeTomaso Forum for 'Cylinder Heads'. Bring a comfortable chair and a bottle of water....